Riemann Integration

[jakepalanca]

• [x] I have read CONTRIBUTING.md.
• [x] This pull request is all my own work -- I have not plagiarized it.
• [x] All filenames are in PascalCase.
• [x] All functions and variable names follow Java naming conventions.
• [x] All new algorithms have a URL in their comments that points to Wikipedia or other similar explanations.
• [x] All new code is formatted with clang-format -i --style=file path/to/your/file.java

[DenizAltunkapan]

Please fix the failing pipelines. I accidentally marked this PR as ready for review.

[jakepalanca]

@jakepalanca are you still working on it?

Yes, I got caught up with something. I'll complete this by tomorrow.

[siriak]

Please check failed PR checks

[github-actions[bot]]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contribution!

[DenizAltunkapan]

Still there? @jakepalanca